I am currently running 13 flat on stock heads. I ran that time with the stuff in my sig, 3.42 gears, edelbrock headers, and a flowmaster catback. Ive since put in some 3.73s, hooker long tubes, mufflex y, and borla catback. Im gonna get some killer afr heads that are 190 cc and flow 280 cfm at .600" lift and 1.6 rollers (.554" lift). Could this combo get me high 11s or am I going to have to settle for low 12s?

 

Are those AFR heads ported and flow tested? You might increase the power enough to get into the 11s but with more gear, decent converter (and I'll assume a deep geared 700r4), and DRs you might not have enough traction. I don't know what your suspension setup in though.

Trevor